sql parser support TimeStamp Literal.

src/main/java/com/alibaba/druid/sql/ast/expr/SQLTimestampExpr.java

@@ -35,6 +35,11 @@ public class SQLTimestampExpr extends SQLExprImpl implements SQLValuableExpr {
         
     }
 
+    public SQLTimestampExpr(String literal){
+        this.literal = literal;
+    }
+
+
     public SQLTimestampExpr clone() {
         SQLTimestampExpr x = new SQLTimestampExpr();
         x.literal = literal;

src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java

@@ -323,6 +323,12 @@ public class SQLExprParser extends SQLParser {
                     SQLDateExpr dateExpr = new SQLDateExpr();
                     dateExpr.setLiteral(literal);
                     sqlExpr = dateExpr;
+                } else if (hash_lower == FnvHash.Constants.TIMESTAMP
+                        && (lexer.token == Token.LITERAL_CHARS || lexer.token == Token.VARIANT)
+                        && !JdbcConstants.ORACLE.equals(dbType)) {
+                    SQLTimestampExpr dateExpr = new SQLTimestampExpr(lexer.stringVal());
+                    lexer.nextToken();
+                    sqlExpr = dateExpr;
                 } else if (JdbcConstants.MYSQL.equalsIgnoreCase(dbType) && ident.startsWith("0x") && (ident.length() % 2) == 0) {
                     sqlExpr = new SQLHexExpr(ident.substring(2));
                 } else {

src/main/java/com/alibaba/druid/sql/visitor/ExportParameterVisitorUtils.java

@@ -97,6 +97,9 @@ public final class ExportParameterVisitorUtils {
         } else if (param instanceof SQLHexExpr) {
             value = ((SQLHexExpr) param).toBytes();
             replace = true;
+        } else if (param instanceof SQLTimestampExpr || param instanceof SQLDateExpr) {
+            value = ((SQLTimestampExpr) param).getValue();
+            replace = true;
         } else if (param instanceof SQLListExpr) {
             SQLListExpr list = ((SQLListExpr) param);
 

src/main/java/com/alibaba/druid/sql/visitor/ParameterizedOutputVisitorUtils.java

@@ -17,6 +17,7 @@ package com.alibaba.druid.sql.visitor;
 
 import java.util.List;
 
+import com.alibaba.druid.sql.SQLUtils;
 import com.alibaba.druid.sql.ast.*;
 import com.alibaba.druid.sql.ast.statement.*;
 import com.alibaba.druid.sql.dialect.db2.visitor.DB2OutputVisitor;
@@ -287,4 +288,18 @@ public class ParameterizedOutputVisitorUtils {
 
         return new SQLASTOutputVisitor(out, true);
     }
+
+    public static String restore(String sql, String dbType, List<Object> parameters) {
+        List<SQLStatement> stmtList = SQLUtils.parseStatements(sql, dbType);
+
+        StringBuilder out = new StringBuilder();
+        SQLASTOutputVisitor visitor = SQLUtils.createOutputVisitor(out, dbType);
+        visitor.setInputParameters(parameters);
+
+        for (SQLStatement stmt : stmtList) {
+            stmt.accept(visitor);
+        }
+
+        return out.toString();
+    }
 }

src/main/java/com/alibaba/druid/sql/visitor/SQLASTOutputVisitor.java

@@ -4278,6 +4278,16 @@ public class SQLASTOutputVisitor extends SQLASTVisitorAdapter implements Paramet
 
     @Override
     public boolean visit(SQLTimestampExpr x) {
+        if (this.parameterized) {
+            print('?');
+            incrementReplaceCunt();
+
+            if(this.parameters != null){
+                ExportParameterVisitorUtils.exportParameter(this.parameters, x);
+            }
+            return false;
+        }
+
         print0(ucase ? "TIMESTAMP " : "timestamp ");
 
         if (x.isWithTimeZone()) {
@@ -5537,6 +5547,16 @@ public class SQLASTOutputVisitor extends SQLASTVisitorAdapter implements Paramet
     }
 
     public boolean visit(SQLDateExpr x) {
+        if (this.parameterized) {
+            print('?');
+            incrementReplaceCunt();
+
+            if(this.parameters != null){
+                ExportParameterVisitorUtils.exportParameter(this.parameters, x);
+            }
+            return false;
+        }
+
         SQLExpr literal = x.getLiteral();
         print0(ucase ? "DATE " : "date ");
         printExpr(literal);